AirHint found the following cheapest return flights from Seoul (ICN) to Athens (ATH) in August 2025 (see full year).

Return flights

19 Aug - 23 Aug	Air China
19 Aug - 22 Aug	Air China
17 Aug - 29 Aug	Air China
17 Aug - 30 Aug	Air China
19 Aug - 27 Aug	Air China
21 Aug - 27 Aug	Air China
17 Aug - 22 Aug	Air China
26 Aug - 27 Aug	Air China
26 Aug - 29 Aug	Air China
24 Aug - 30 Aug	Air China
29 Aug - 03 Sep	Air China
31 Aug - 10 Sep	Air China
19 Aug - 02 Sep	Lufthansa
30 Aug - 05 Sep	Scoot Tigerair
29 Aug - 04 Sep	Ethiopian Airlines
25 Aug - 04 Sep	Lufthansa
26 Aug - 04 Sep	Lufthansa
09 Aug - 07 Sep	Lufthansa
26 Aug - 02 Sep	Lufthansa
15 Aug - 05 Sep	Lufthansa

Also check the deals for one-way flights from Seoul to Athens in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Seoul to Athens in August from 503€

Return flights